package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 用户注册
 *
 * 程序启动后，要求顺序输入用户名，密码，昵称，年龄，然后将该用户保存到userinfo表中
 */
public class RegDemo {
    public static void main(String[] args) {
        User user = InputUtil.getInputObject(new User(),"欢迎注册","注册");
        System.out.println(user);

        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            Connection connection = DriverManager.getConnection(
                    //   jdbc:mysql://数据库IP:端口/数据库名?参数...
                    "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                    "root",
                    "root"
            );
            System.out.println("成功连接数据库");
            Statement statement = connection.createStatement();
            /*
                INSERT INTO userinfo(username,password,nickname,age)
                VALUES('张三','123456','阿三',22)
             */
            String sql = "INSERT INTO userinfo(username,password,nickname,age) " +
                    "VALUES('"+user.getUsername()+"','"+user.getPassword()+"','"+user.getNickname()+"',"+user.getAge()+") ";
            /*
                Statement有专门用于执行DML语句的方法:
                int executeUpdate(String sql)
                方法返回值表示执行SQL后影响了表中多少条记录
             */
            int num = statement.executeUpdate(sql);
            if(num>0){
                System.out.println("插入成功");
            }
            connection.close();
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        }
    }
}





